html {
    width: 100%;
    height: 100%;
    body {
      width: 100%;
      height: 100%;
    }
  }
  
  #login {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    vertical-align: middle;
    align-items: center;
    background-image: url(../imgs/home-bg.jpg);
    background-size: cover;
    form {
      width: 60%;
      max-width: 600px;
      background-color: white;
      border: 1px solid #cccccc;
      padding: 20px 40px 50px;
      border-radius: 8px;
      box-shadow: #666666 0 0 15px;
      h3 {
        padding: 10px 0;
        border-bottom: 1px solid #ddd;
        text-align: center;
        line-height: 1.5em;
      }
      .input-group {
        padding: 10px;
      }
      .btn {
        margin-top: 20px;
      }
    }
  }